AM_Ilvaite_13
Formula: Ca.98 Mn.74 Fe2.28 Si2 O9 H
Name: Ilvaite
Unit cell: 13.015 8.868 5.842 90.0 90.0 90.0 , V=674.27
Space group: PNAM (62)

Bonazzi P , Bindi L , American Mineralogist , 87 (2002) p.845-852, Structural properties and heat-induced oxidation-dehydrogenation of, manganoan ilvaite from perda Niedda mine, Sardinia, Italy, Sample: PN6-400, Crystal at room temperature, annealed at 400 C for 48 hrs